M5 Impeller

[1107]

Has anyone changed their M5 or M6 impeller?.  It's easy to get to the housing but clearance to remove the impeller is limited.   Looks like removing the plastic intake will give plenty of clearance.

Edited June 10, 2020 by 1107
correction to procedure

[23LSVOwner]

You can do it with the intake on.

 

Put a rag down in the valley behind the pump (to catch any dropped screws).

1/4 drive ratchet to remove the cover fasteners.

90 degree needle nose pliers. Grab the impeller at the bottom of one of the fins really close to the center and work it until it comes out.

Edited June 10, 2020 by 23LSVOwner

[1107]

Did you do this?  90° pliers could work.  And getting it back in will be tight.   The gap between the intake and the pump is slightly wider the the impeller.

This is the original with 100 hrs.  Looks pretty good compared to other pictures I've seen.    

 

[23LSVOwner]

45 minutes ago, 1107 said:

Did you do this?  90° pliers could work.  And getting it back in will be tight.   The gap between the intake and the pump is slightly wider the the impeller.

This is the original with 100 hrs.  Looks pretty good compared to other pictures I've seen.    

 

Yes. Is the center of the impeller silver?

 

If so need to get the updated one in there. It has a brass center.

[1107]

yes it is.  And I have the new brass impeller.  It's in there pretty tight.  I can use some lubrication and bump the starter to spread it around.  Then use the pliers you suggested.  And you were able to install the new impeller with removing anything?

 

[23LSVOwner]

6 minutes ago, 1107 said:

yes it is.  And I have the new brass impeller.  It's in there pretty tight.  I can use some lubrication and bump the starter to spread it around.  Then use the pliers you suggested.  And you were able to install the new impeller with removing anything?

 

Yes. It's tight, but dooable.

[G Spot]

I removed the belt and unbolted the pump from the engine. That was so easy to do that I can't imagine fighting the tight space.

[1107]

That's a good idea.  Wonder if anyone has the service manual.  Is the tensioner spring loaded?